1 /* $OpenBSD: mulaw.h,v 1.12 2005/04/14 01:24:20 pascoe Exp $ */
2 /* $NetBSD: mulaw.h,v 1.11 1999/11/01 18:12:19 augustss Exp $ */
3
4 /*-
5 * Copyright (c) 1996 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by John T. Kohl.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /* *_mts versions convert mono to stereo, in addition */
41
42 /* Convert 8-bit mu-law to 16 bit unsigned linear. */
43 extern void mulaw_to_ulinear16_le(void *, u_char *, int);
44 extern void mulaw_to_ulinear16_le_mts(void *, u_char *, int);
45 extern void mulaw_to_ulinear16_be(void *, u_char *, int);
46 extern void mulaw_to_ulinear16_be_mts(void *, u_char *, int);
47 /* Convert 8-bit mu-law to/from 16 bit signed linear. */
48 extern void mulaw_to_slinear16_le(void *, u_char *, int);
49 extern void mulaw_to_slinear16_le_mts(void *, u_char *, int);
50 extern void mulaw_to_slinear16_be(void *, u_char *, int);
51 extern void mulaw_to_slinear16_be_mts(void *, u_char *, int);
52 extern void slinear16_to_mulaw_le(void *, u_char *, int);
53 /* Convert 8-bit mu-law to/from 8 bit unsigned linear. */
54 extern void mulaw_to_ulinear8(void *, u_char *, int);
55 extern void ulinear8_to_mulaw(void *, u_char *, int);
56 /* Convert 8-bit mu-law to/from 8 bit signed linear. */
57 extern void mulaw_to_slinear8(void *, u_char *, int);
58 extern void slinear8_to_mulaw(void *, u_char *, int);
59 /* Convert 8-bit a-law to 16 bit unsigned linear. */
60 extern void alaw_to_ulinear16_le(void *, u_char *, int);
61 extern void alaw_to_ulinear16_be(void *, u_char *, int);
62 /* Convert 8-bit a-law to/from 16 bit signed linear. */
63 extern void alaw_to_slinear16_le(void *, u_char *, int);
64 extern void alaw_to_slinear16_le_mts(void *, u_char *, int);
65 extern void alaw_to_slinear16_be(void *, u_char *, int);
66 extern void alaw_to_slinear16_be_mts(void *, u_char *, int);
67 extern void slinear16_to_alaw_le(void *, u_char *, int);
68 extern void slinear16_to_alaw_be(void *, u_char *, int);
69 /* Convert 8-bit a-law to/from 8 bit unsigned linear. */
70 extern void alaw_to_ulinear8(void *, u_char *, int);
71 extern void ulinear8_to_alaw(void *, u_char *, int);
72 /* Convert 8-bit a-law to/from 8 bit signed linear. */
73 extern void alaw_to_slinear8(void *, u_char *, int);
74 extern void slinear8_to_alaw(void *, u_char *, int);
75 /* Convert 8-bit a-law to/from mulaw */
76 void alaw_to_mulaw(void *, u_char *, int);
77 void mulaw_to_alaw(void *, u_char *, int);
78
79 /* backwards compat for now */
80 #if BYTE_ORDER == LITTLE_ENDIAN
81 #define mulaw_to_ulinear16 mulaw_to_ulinear16_le
82 #define alaw_to_ulinear16 alaw_to_ulinear16_le
83 #define mulaw_to_slinear16 mulaw_to_slinear16_le
84 #define mulaw_to_slinear16_mts mulaw_to_slinear16_le_mts
85 #define alaw_to_slinear16 alaw_to_slinear16_le
86 #define alaw_to_slinear16_mts alaw_to_slinear16_le_mts
87 #else
88 #define mulaw_to_ulinear16 mulaw_to_ulinear16_be
89 #define alaw_to_ulinear16 alaw_to_ulinear16_be
90 #define mulaw_to_slinear16 mulaw_to_slinear16_be
91 #define mulaw_to_slinear16_mts mulaw_to_slinear16_be_mts
92 #define alaw_to_slinear16 alaw_to_slinear16_be
93 #define alaw_to_slinear16_mts alaw_to_slinear16_be_mts
94 #endif